Keeping things light

Hello, We are in the process of exploring if we can make a cargo trailer conversion. We are long time tent campers, and some aspects of that are getting harder. We would like to continue to camp, but have it be a bit easier. Goals are to do less heavy lifting, make prep and tear down easier. If we are to do this beginning now, we have to work with our current vehicle, a toyota 4 runner which is rated to tow 5000 lbs. I have started to play with designs and found a trailer which may work. It is a 6x12 v nose and the goal would be to keep it and our gear to just under 3000lb. Working on it, not sure it is possible yet!
Our idea is to have an upper bunk, queen size, accessible from the inside of the trailer. Below part of the bed, would be shelves for clothing. In front of the bed, On one side and in the nose would be a counter, under which would sit a porta potty, a portable AC unit and a small gray water tank. Stored under the bed, accessed from the back barn doors, would be a kitchen that slides out--one side the coolers and another side the propane tank and stove. We will store a table back there for transport, but it will sit up apart from the trailer when in camp. above the slide out sections will be kitchen cupboards. When open, it will form a U shaped outside kitchen, but will all slide in and store inside.
Questions: Is it reasonable to expect the 4 runner to do well with that load 3000 + us, our food and clothing Probably another 500 lb Say 4000lb to be generous? 4/5 of its rated towing capacity (We are looking into a transmission cooler. Our mechanic has not gotten back to me yet with recommendations)
2. We intend to take the 3/8 inch sidewalls that come with the trailer off and put up insulation and then another wall covering. Does that wall covering need to have a structural component? In other words, the particle board stuff that is in a trailer provides some support and stiffness to the walls. A lighter material may not accomplish that. What light materials have people used for putting over the insulation?
3. Can you give recommendations for light yet durable kitchen cabinets? I would want two 24 wide 30 tall 12 deep and one 18 wide 30 tall 12 deep.
Thanks!
Toni
Our idea is to have an upper bunk, queen size, accessible from the inside of the trailer. Below part of the bed, would be shelves for clothing. In front of the bed, On one side and in the nose would be a counter, under which would sit a porta potty, a portable AC unit and a small gray water tank. Stored under the bed, accessed from the back barn doors, would be a kitchen that slides out--one side the coolers and another side the propane tank and stove. We will store a table back there for transport, but it will sit up apart from the trailer when in camp. above the slide out sections will be kitchen cupboards. When open, it will form a U shaped outside kitchen, but will all slide in and store inside.
Questions: Is it reasonable to expect the 4 runner to do well with that load 3000 + us, our food and clothing Probably another 500 lb Say 4000lb to be generous? 4/5 of its rated towing capacity (We are looking into a transmission cooler. Our mechanic has not gotten back to me yet with recommendations)
2. We intend to take the 3/8 inch sidewalls that come with the trailer off and put up insulation and then another wall covering. Does that wall covering need to have a structural component? In other words, the particle board stuff that is in a trailer provides some support and stiffness to the walls. A lighter material may not accomplish that. What light materials have people used for putting over the insulation?
3. Can you give recommendations for light yet durable kitchen cabinets? I would want two 24 wide 30 tall 12 deep and one 18 wide 30 tall 12 deep.
Thanks!
Toni